Question

Soal :
1. Jika F(x)=1-2x , G(x)=x²+1 , H(x)=2x , maka (HoGoF)(2)=...

2. Diketahui F(x)=x²+2x+1 , dan G(x)=x-1 , jika (FoG)(x)=4 , maka nilai x =....

3. Diketahui F(x)=x+1 dan (FoG)(x)=3x²+4, maka G(x)=....

4. Fungsi F(x)=2x/3x-4 , x≠2 . Nilai f⁻¹(1)=....
#please bantuin penting banget , carakerjanyajuga ya :)

Answer 1

1. (HoGoF) (2) = 2 (2) . (2)^2+1 . 1-2 (2) = 4 . 5 . -3 = -60
2. (FoG) (x) = 4
    (x^2 + 2x + 1) (x-1) = 4
    x^3 - x^2 + 2x^2 - 2x + x - 1 = 4
    x^3 + 0x^2 - x - 1 = 4
    x = x^3 + 0x^2 - 3